Proto J52325S Socket Set 3 8 in Drive Size, 25 Pieces, 5 16 in to 3 4 in, 8 mm to 18 mm Socket Size Range 2BW05 6V DC Mounting Wall Housing 6V DC Mounting Wall Housing Material Emergency Lighting and Exit Signs Plastic Housing Material Plastic Housing Color Emergency Lighting and Exit Signs White Battery Chemistry Nickel Cadmium Number of Lamp Heads 2 Emergency Illumination Time Emergency Lighting and Exit Signs 90 min Watts @ 90 Minutes 3 They are a cost effective alternative to steel in areas where local safety codes don't require steel housings and where fixtures won't be subject to impacts or abuse (1) 8MM Standard 6 Point (1) 17MM Standard 6 Point